/* 
 * Copyright (C), 2016-2020, 厦门盈欣宝金融信息服务有限公司
 * Project Name :boot-parent
 * File Name: org.easytouseit.redis.config
 * Encoding UTF-8 
 * Version: 1.0 
 * Date: 2018-09-12 15:25
 * History:  
 * 1. Date: 2018-09-12
 *    Author: guojm 
 *    Modification: 新建
 * 2. ...
 */
package org.easytouseit.redis.config;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import org.springframework.lang.Nullable;

import java.nio.charset.Charset;

/**
 * 自定义redis序列化方式
 *
 * @author guojm
 * @version V1.0
 * @date 2018-09-12 下午 15:25
 */
public class FastJsonRedisSerializer <T> implements RedisSerializer<T> {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T> clazz;

    public FastJsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }
        @Nullable
    @Override
    public byte[] serialize(@Nullable T t) throws SerializationException {
            if (t == null) {
                return new byte[0];
            }
            return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Nullable
    @Override
    public T deserialize(@Nullable byte[] bytes) throws SerializationException {
        if (bytes == null || bytes.length <= 0) {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);
        return JSON.parseObject(str, clazz);
    }
}
